Binding post



Patented Aug. 31, 1937 UNITED STATES ATENT OFFICE BINDING POST Harry A. Reichenbach, Detroit, Mich. Application December 19, 1935, Serial No. 55,163 Claims. (Cl. 85-4) My invention relates to a new and useful impost. This male portion is adapted to enter the provement in a binding post adapted for use on female portion and threaded into the male porloose leaf books and has for its object the protion 15 is a stud l6 which serves to carry a vision of a binding post comprised of a pair of clamping head. This clamping head comprises cooperating parts so arranged and constructed the cylindrical portion H which is slitted'as at 5 that when these parts are moved into binding it. An outwardly projecting conical head 19 is position relatively to each other they will automounted on the inner end of the sleeve H, the matically lock and remain firmly held together slits l8 extending through this head. The inuntil released. ner end of the head which flares outwardly from 1;] Another object of the invention is the provithe cylindrical Sleeve is Provided With the 10 sion of a binding post of this kind which will concave surface 20 formed by undercutting so be simple in structure, economical of manufacthat the pe ipheral ed e 2 of the sections into ture, durable, easily and quickly operated and wh ch the head is out will present a fine ed e highly efficient in use. for contacting with the inner surface of the Another object of the invention is the provitubular member l3. In use the member l5 would 1.5 sion of a binding post of this kind having a, be thrust inwardly of the female member as binding head mounted on a tapered shank so a as possible d the h 9 uld snu y arranged and constructed that, an attempt t engage against the inner surface of the tubular separate the posts will move th taper i t h h or female member l3. It will be noted that the expanding position to more effectively lock t lower or outer end 22 of the stud I6 is tapered. parts together. Consequently, after the head has been thrust in- Another object of the invention is the provi- Wardly of the female member a d t inwardsion in a binding post of this class of a binding it- Pressure released, the leaves will head mounted on a shank and slidable axially fore? the m mbe 55 wardly So that the tathereof, pered surface 22 will move inwardly of the head Other objects will appear hereinafter. and cause its expansion so that it is securely The invention consists in the combination and locked against va When it is desired to arrangement of parts hereinafter described and remove the Sections and 53 from Cooperative m d, relation with each other, a tubular releasing tool The invention will be best understood by a 23 may be inserted from the anterior end of the reference to th ac i d i which tube l3. In order to release the head the same forms a part of thi Specification, and in which, will have to be slid along the stud l6 until the Fig. 1 is a longitudinal, central, sectional view taper disonsases from the headr th s r as n, of the invention showing the parts in assembled it will be noted that there is Sufficient length relation. in the member IE to permit this slidable move- 35 Fig. 2 is a longitudinal, central, sectional view meht' showing the releasing tool in position With a binding post constructed in this man- Fig. 3 is a side elevational view of the male the removal or replacement of l v s may member with a part broken away. be very easily and quickly effected and the bind- 40 40 4 is a view taken on hhe s 4 of Fig 1 ing post maintained securely in locked position Fig. 5 is a view taken on line 5-5 of Fig. l. at all 1 Fig. 6 is a fragmentary view of a slightly In Fig. 6 I have shown the male portion l5 modified form showing a part broken away and Provided with a Stud p on t which is H part shown in Section formed integral therewith. After the cylindri- In Fig. 1 1 have illustrated the invention in Cal portion 11 is mounted in p i n, the end 4 use for binding the sheets 9 between the covers of the portion may be upset s at 24 to Iii and H. The cover II is provided t an provide a bead which will retain the parts in asopening l2 through which is projected the tubu- Sombled e t lar or female portion 13 of the binding post. WhileIhave illustrated and described the pre- The flange M on one end of this tubular pord form of Construction, I do not wish to tion serves as a, head The leaves 9 are, of limit myself to the precise details 0f structure course, provided with suitable openings for reshown, but desire to avail myselfof such Variaception of the binding post. The cover I0 is tions and modifications as may come within th provided with an opening l4 through which exscope of the appended claims, tends the pin or male portion ll) of the binding Having thus described my invention, wh t I claim as new and desire to secure by Letters Patent is:

1. A binding post of the class described, comprising: a pair of cooperating sections, one of said sections being tubular and the other of said sections being insertable at one end into said tubular section; a reduced extension on the inserted end of said insertable section; an expansible cylindrical sleeve freely slidable in both directions and rotatably mounted on said extension, said extension being tapered, the slidable movement of said cylindrical member onto said tapered portion expanding the same for engagement with the inner surface of said tubular section for lock- 5 ing said sections in fixed relation to each other.

2. A binding post of the class described, comprising: a pair of sections, one of said sections being tubular and the other being insertable at one end thereinto; a reduced extension on the inserted end of said section terminating in a taper; a cylindrical sleeve rotatably mounted on said extension and freely slidable thereon; an out- Wardly projecting peripheral collar on said sleeve, adjacent its inner end, and having a surface in clined to the axis thereof, said sleeve being split longitudinally and adapted upon movement onto said tapered portion for expanding and bringing said collar into engagement With the inner surface of said tubular section for locking said sections in fixed relation to each other.

3. A binding post of the class described, com-- prising: a pair of cooperating sections, one of said sections being tubular and the other of said sections being insertable at one end into said tubular section; a clamping head carried on the inserted end of said section and freely slidable thereon, said end having a tapered portion, the movement of said clamping head onto said tapered portion effecting an expanding oi the same into engage-- ment with the other of said sections for locking the same against relative movement in one direction, said head having an outwardly projecting circumferential edge for engaging the inner su face of said tubular section.

4. A binding post of the class described, comprising: a pair of cooperating sections, one of said sections being tubular and the other of said sections being insertable at one end into said tubular section, said insertable section having a tapered terminal portion; an expansible clamping head mounted on and freely slideably longitudinally of said insertable section in both directions and movable onto and off of said tapered portion, said tapered portion having an outside diameter larger than the inside diameter of said head, the movement of said head onto said tapered portion a predetermined distance expanding said head into engagement with the inner surface of said tubular section for locking said sections in fixed relation,

, said head upon movement out of engagement with said tapered portion returning to normal non-expanding position out of locking engagement with the inner surface of said tubular section.

5, A binding post of the class described, comprising: a pair of cooperating sections, one of said sections being tubular and the other of said sections being insertable at one end into said tubular section, said insertable section having a tapered terminal portion; an expansible clamping head mounted on and freely slidable longitudinally of said insertable section in both directions and movable onto and 01f of said tapered portion, said tapered portion having an outside diameter larger than the inside diameter of said head, the movement of said head onto said tapered portion a pretermined distance expanding said head into engagement with the inner surface of said tubular section for locking said sections in fixed relation, said head upon movement out of engagement with said tapered portion returning to normal nonexpanding position out of locking engagement with the inner surface ofv said tubular section, the axial length of said head being suflicient for preventing tilting of the same relative to the axis 40 of the section on which mounted.

HARRY A. REICHENBACH. 

